When
elements have more than one charge, it is important to distinguish
which charge is being used. We will do this in the way we name the
ion. This tutorial explains how to use the stock naming system.
The
Stock system or Stock's system was designed by Alfred Stock (German
chemist 1876-1946), and first published in 1919. In his own words,
he considered the system to be “simple, clear, immediately
intelligible, capable of the most general application."
In
1924, a German commission recommended Stock's system to be adopted
with some changes. For example, FeCl2, which would have been named
iron(2)-chloride according to Stock's original idea, became iron(II)
chloride in the revised proposal. In 1934, Stock approved of the
Roman numerals, but felt it better to keep the hyphen and drop the
parenthesis. This suggestion has not been followed, but the Stock
system remains in use worldwide.
|
Alfred
Stock
|